TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2015
DA  - 2015//
TI  - Determination of the quark coupling strength vertical bar V-ub vertical bar using baryonic decays
T2  - Nat. Phys.
JO  - Nature Physics
SP  - 743
EP  - 747
VL  - 11
IS  - 9
PB  - Nature Publishing Group
AB  - In the Standard Model of particle physics, the strength of the couplings of the b quark to the u and c quarks, vertical bar V-ub vertical bar and vertical bar V-ub vertical bar, are governed by the coupling of the quarks to the Higgs boson. Using data from the LHCb experiment at the Large Hadron Collider, the probability for the Lambda(0)(b) baryon to decay into the p mu(-)(nu) over bar (mu) final state relative to the Lambda(+)(c)mu(-)(nu) over bar (mu) final state is measured. Combined with theoretical calculations of the strong interaction and a previously measured value of vertical bar V-ub vertical bar, the first vertical bar V-ub vertical bar measurement to use a baryonic decay is performed. This measurement is consistent with previous determinations of vertical bar V-ub vertical bar using B meson decays to specific final states and confirms the existing incompatibility with those using an inclusive sample of final states.
SN  - 1745-2473
UR  - http://arxiv.org/abs/1504.01568
UR  - https://doi.org/10.1038/NPHYS3415
DO  - 10.1038/NPHYS3415
LA  - English
N1  - WOS:000360709200018
ID  - LHCbCollaborationAaij_etal2015
ER  -